CreateErrx is a func to create errorx.

CreateJWT function is to get token based on Token data.

HashPassword function is to hash string.

IsNil is nil value ?.

Message function is to build response per standard.

ReadFromToken is a function to read data from jwt with *http.Request as its param.

Response function is to encode response.

StringToInt to casting string to integer.

ToInt to casting interface to int64.

ToString to casting interface to string.